A 266µW Bluetooth Low-Energy (BLE) Receiver Featuring an N-Path Passive Balun-LNA and a Pipeline Down-Mixing BB-Extraction Scheme Achieving 77dB SFDR and -3dBm OOB-B-1dB

📋 论文概要

该论文提出了一款功耗仅266µW的蓝牙低功耗（BLE）接收机，采用N-Path无源Balun-LNA和流水线下混频基带提取技术，解决了超低功耗下高灵敏度与噪声/线性度之间的权衡问题。

💡 主要创新点

• 提出N-Path无源Balun-LNA结构，实现无源增益并改善噪声与线性度折中。
• 采用流水线下混频基带提取技术，进一步降低功耗并提升接收机效率。

🏷 关键词

📄 原文摘要

University of Lisboa, Lisbon, Portugal 1 3 Ultra-low-power short-range radios are the cornerstone of building a world with the Internet-of-Everything connectivity. To secure a high sensitivity at a sub-mW power budget, state-of-the-art Bluetooth Low-Energy (BLE) receivers [1-4] can hardly prevent the use of an active RF front-end with at least one transconductance gain (gm). Specifically, although the sub-0.5V LNA [1,2] and current-reuse LNA-Mixer-VCO cell [3] succeed in power savings, the squeezed voltage headroom tightens the tradeoff between the noise figure (NF) and linearity. The NF and out-of-band (OOB) IIP3 together govern the spurious-free dynamic range (SFDR) of a receiver, demonstrating its capability to uphold a minimum signal-to-noise ratio (SNRmin) for the demodulator in the presence of blockers. This paper reports a 266µW BLE receiver fabricated in 28nm CMOS. It achieves a 6.1dB

👥 作者与机构

Haijun Shao1, Pui-In Mak1, Gengzhen Qi2, Rui P. Martins1,3

University of Macau, Macau, China; 2Sun Yat-Sen University, Zhuhai, China